71426091 has 16 divisors (see below), whose sum is σ = 104077440. Its totient is φ = 43211520.

The previous prime is 71426083. The next prime is 71426099. The reversal of 71426091 is 19062417.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71426083) and next prime (71426099).

It is not a de Polignac number, because 71426091 - 2³ = 71426083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71426099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20955 + ... + 24123.

It is an arithmetic number, because the mean of its divisors is an integer number (6504840).

Almost surely, 2^71426091 is an apocalyptic number.

71426091 is a deficient number, since it is larger than the sum of its proper divisors (32651349).

71426091 is a wasteful number, since it uses less digits than its factorization.

71426091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 71426091 is about 8451.3958018779. The cubic root of 71426091 is about 414.9084638682.

The spelling of 71426091 in words is "seventy-one million, four hundred twenty-six thousand, ninety-one".